Question

what is a solenoid..........?​

Answer 1

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A solenoid is a type of electromagnet, the purpose of which is to generate a controlled magnetic field through a coil wound into a tightly packed helix. The coil can be arranged to produce a uniform magnetic field in a volume of space when an electric current is passed through it.

Answer 2

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SOLENOID :-

A coil with many circular close turns of insulated copper wire (like a cylinder as shown above) is a solenoid.

USES:-

• Solenoids help the energy to convert into action instantly.
• In doorbell, the audible sound generates because the metal piston strikes at a tone bar.